Arid
DOI10.3390/w10121833
Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites
Bashir, Rashid; Chevez, Eric Pastora
通讯作者Bashir, Rashid
来源期刊WATER
ISSN2073-4441
出版年2018
卷号10期号:12
英文摘要

Oilfield-produced brine is a major source of salt contamination in soil and groundwater. Salt transport in the upper soil layers is controlled by the atmospheric interactions via infiltration of meteoritic water. In lower layers, it is controlled by fluctuations in the groundwater table, which are also linked to atmospheric interactions via groundwater recharge. Therefore, climate is an important factor in the movement of contaminants in the unsaturated zone. A one-dimensional variably saturated flow and transport model with soil atmospheric boundary conditions was used to estimate the effect of climate type and soil texture on soil water and salt dynamics in variably saturated soils. Numerical simulations were run with Hydrus-1D, using daily climate data. Simulations were run for nine-year climate datasets for different ecoclimatic locations in Alberta, Canada. Results indicated that coarse-grained materials are good evaporation barriers, resulting in water gain conditions at the ground surface, irrespective of the climate type. However, the quantity of water gain and associated advective fluxes are a function of climate. Results also indicated that flow and transport in fine-textured soils is more dependent on the climate type. For fine-grained soils in arid climatic conditions, net water loss at the ground surface and upward migration of salt can be expected. For wetter climates, the upward migration of salt is less probable.


英文关键词unsaturated flow and transport oilfield brine soil-atmosphere interaction finite element methods climate
类型Article
语种英语
国家Canada
收录类别SCI-E
WOS记录号WOS:000455314300128
WOS关键词SOIL HYDRAULIC-PROPERTIES ; CONDUCTIVITY ; TEXTURE
WOS类目Water Resources
WOS研究方向Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/213656
作者单位York Univ, Lassonde Sch Engn, Dept Civil Engn, Toronto, ON M3J 1P3, Canada
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GB/T 7714
Bashir, Rashid,Chevez, Eric Pastora. Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites[J],2018,10(12).
APA Bashir, Rashid,&Chevez, Eric Pastora.(2018).Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites.WATER,10(12).
MLA Bashir, Rashid,et al."Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites".WATER 10.12(2018).
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